title: A structure-property-performance investigation of perylenediimides as electron accepting materials in organic solar cells.
abstract: Solution-processed perylenediimides (PDIs) with varying peri and bay substituents are characterized in order to better understand the relationships between molecular structure, solid state order, charge transport, and photovoltaic performance. It was found that bulky bay substituents interfere with molecular packing, leading to low charge transport and photovoltaic efficiencies compared to PDIs with fewer or less disruptive substituents. We assessed the potential of PDIs as acceptors for organic photovoltaics (OPVs) by utilizing a solution-processed bilayer OPV device architecture with the donor benzoporphyrin. At AM1.5G illumination, power conversion efficiencies (PCEs) up to 2.0% are obtained for solution-processed bilayer OPVs employing PDIs as acceptors. These results demonstrate the potential of PDIs as photovoltaic acceptor materials while elucidating the relationships between molecular structure and material properties.
authors.affiliation: Mitsubishi Chemical Center for Advanced Materials, University of California, Santa Barbara, CA 93106, USA. quyen@chem.ucsb.edu.
authors.forename: Michele
authors.initials: M
authors.lastname: Guide
authors.forename: Sara
authors.initials: S
authors.lastname: Pla
authors.forename: Alexander
authors.initials: A
authors.lastname: Sharenko
authors.forename: Peter
authors.initials: P
authors.lastname: Zalar
authors.forename: Fernando
authors.initials: F
authors.lastname: Fernández-Lázaro
authors.forename: Ángela
authors.initials: Á
authors.lastname: Sastre-Santos
authors.forename: Thuc-Quyen
authors.initials: TQ
authors.lastname: Nguyen